ASTROSAT CZTI

Data Quality Report

Orbit 16216

Creation date: 2024-06-27T17:19:29.199408
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_110T01_9000002388_16216cztM0_level2.evt modeM0/AS1T02_110T01_9000002388_16216cztM0_level2_quad_clean.evt
Size (bytes)500,509,440100,365,120
Size477.3 MB 95.7 MB
Events in quadrant A4,125,882649,307
Events in quadrant B3,654,347646,166
Events in quadrant C3,430,828618,457
Events in quadrant D3,455,900622,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168772
B0155091
C0149021
D0152971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72401411.947514%
B7240961.325967%
C7240771.063536%
D7240280.386740%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7496 7242 89 89 1.19% 1.23%
B 7496 7242 23 23 0.31% 0.32%
C 7496 7242 1 1 0.01% 0.01%
D 7496 7242 14 14 0.19% 0.19%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 419742 2376.05 859 838 176.3
A 4 2 274812 1554.0 859 838 176.3
A 0 253 80667 452.8 859 838 176.3
B 0 189 104509 631.7 857 833 164.1
B 0 198 85546 516.16 857 833 164.1
B 0 219 30716 182.08 857 833 164.1
C 14 238 127369 652.52 825 831 193.9
C 0 207 37988 191.61 825 831 193.9
C 3 233 18568 91.47 825 831 193.9
D 2 233 180628 868.88 843 817 206.9
D 2 234 34729 163.87 843 817 206.9
D 1 52 34690 163.68 843 817 206.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter